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Get complete control over your gadgets and toys with the help of Tethercell. This device works with any device that is powered with AA batteries and allows you to monitor them with its smartphone app. You can check the battery levels, turn your stuff on and off, get alerts when the batteries are low, set timers and even track the location of the device powered by Tethercell. You just need to replace one of the batteries with Tethercell and download the compatible app.


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